Particle system only shows one particle?
From the comments:

It will eventually add all of them, but you have it set to add them from frame 1 to frame 200. I think you would get the effect that you want if you set the end to frame 1.

Turn off physics by setting it to No, set the start and end to the same value, and then give them a really long lifetime...you have it set to the default of 50.